I have one with a guide and love it. You may still need to adjust your needle position to the left or right to achieve your target seam allowance. Another thing. My girlfriend was complaining about how she hated hers. Come to find out, she was making HST by drawing a diagonal on a square of fabric and sewing a 1/4" on each side. This is not what this foot is for. The guide should almost touch your throat plate, and fabric should not be able to slide under it. When you need to sew HSTs, or any other seam where the raw edge of your fabric is not going to ride up against your guide, you need to use a different foot.